cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 350

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

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KEL Register Descriptions
5.10.2.2
KEL Memory Offset 104h
Type
Reset Value
I/O data that is written to I/O Port 060h and 064h is captured in the HCE_Input register when emulation is enabled. This
register may be read or written directly by accessing it with its memory address in the KEL’s operational register space.
When accessed directly via the KEL’s operational address space, reads and writes of this register have no side effects.
5.10.2.3
KEL Memory Offset 108h
Type
Reset Value
The data placed in the HCE_Output register by the emulation software is returned when I/O Port 060h is read and emula-
tion is enabled. On a read of this location, the OutputFull bit in HCE_Status is cleared to 0.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31:8
31:8
Bit
7:0
Bit
7:0
KEL HCE Input (KEL_HCE_IN)
KEL HCE Output (KEL_HCE_OUT)
Name
RSVD
Input_Data
Name
RSVD
Output_Data
R/W
000000xxh
R/W
000000xxh
Description
Reserved. Writes have no effect; reads return 0.
Input Data. This register holds data normally read by SSM software. The register value
is normally established by a write to I/O Port 060h or 064h. However, the value can also
be established by a direct write. Such direct writes have no side effects.
Description
Reserved. Writes have no effect; reads return 0.
Output Data. This register holds data normally written by SSM software. It is returned
when an I/O read of I/O Port 060h is performed. Writes to this register have no side
effects. After writing this register, SSM software normally sets OutputFull in
HCE_Status.
(Continued)
KEL_HCE_OUT Bit Descriptions
RSVD
RSVD
KEL_HCE_IN Bit Descriptions
KEL_HCE_OUT Register Map
KEL_HCE_IN Register Map
350
9
9
8
8
7
7
6
6
5
5
Output_Data
Input_Data
4
4
3
3
2
2
Revision 0.8
1
1
0
0